Is PNG Compressor free?

Yes. Mirown PNG Compressor is free to use, and no sign up or login is required.

Can I upload multiple PNG images?

Yes. You can upload multiple PNG images, compress all files together, and download the results as one ZIP file.

Are files uploaded to Mirown servers?

Supported compression workflows run in the browser. Mirown is designed to avoid server storage for these file tools.

Why did my file not reduce much?

Some files are already compressed. Images, PDFs, and Office files with optimized media may show smaller reductions in a browser-only compressor.

Image and document tools

PNG Compressor

Free online file compression with no sign up or login required.

Upload PNG

Drop PNG images here or click upload to select multiple files

Download as ZIP

Upload PNG images, choose a compression level, then compress all files.

Buy me a coffee

Mirown is free to use, if this tool saves your time

Free file compressor

Compress PNG images while keeping PNG output.

Mirown PNG Compressor keeps the PNG format and uses browser image processing to reduce file size where possible. Upload several PNG images, choose a level, and compare each result before downloading as a ZIP.

PNG is often used for screenshots, transparent graphics, UI images, and clean artwork. Some PNG files are already optimized, so the reduction can vary.

What this free compressor includes

Multiple PNG upload
PNG output preserved
Quality-focused size levels
Before and after table
Free ZIP download

How to use PNG Compressor

Click Upload PNG and select one or multiple PNG images.
Choose Less compression for high quality, Medium compression for balanced results, or Extreme compression for the smallest size. Medium compression is recommended for most files.
Click Compress all files and let your browser process the files.
Check the before size, after size, and reduction percentage for every file.
Download the compressed results as a ZIP file and review them before replacing your originals.

Why use Mirown PNG Compressor?

Mirown keeps compression simple, free, and private for everyday work. There is no account, no sign up, no login, and no complicated settings. The page is built with real crawlable text, fast static loading, and a focused browser tool so users can understand the result before downloading.

Privacy and browser-only notes

Mirown file compressor pages are designed for local browser processing. That means supported files can be prepared on your device without upload-based storage. Keep your original files, especially for important documents, and review compressed output before sending it to someone else.

Important compression limit

Browser PNG encoding does not expose the same deep optimizer settings as native tools. Large reductions usually come from safe dimension scaling in medium or extreme mode.